FREEMOVE Hydration Pack Water Bladder Mouthpiece Replacement with Bite Valve Shutoff Switch and Silicone Nozzle Protector. Easy Installation on Your Hydration Backpack Drink Tube.

I’m one of those people who has a lot of trouble keeping her bladder nipple clean. This solved the problem. It comes easily off and on, and the valve works great—better than the original valve on my Platypus bladder. The liquid flows freely. The only issue was that the connector stem broke after a few days, so I have to be careful not to drop it. Otherwise, I can’t live without it.

Bite valve works great, doesn't leak. Dust cover opens valve when taken off and closes valve when put back on. Fits the tubes from the old model Osprey Hyraform packs. Osprey has changed the tube diameter, and no longer sells any parts to supple the old style packs. Fortunately, this valve fits perfectly.

C'est parfait!

I ordered this to replace a leaky bit valve that was a few years old, probably just degraded with time and heat. It was dribbling on me out of the pack, I was trying to be "careful" with it's angle while hiking - that's annoying. I didn't need a new water backpack, nor a new 2L bladder, I just needed a bite valve. I removed the old one with pliers, then twisted this new one into the same tube. This one is a bit different, as it requires pulling open. On testing, it's easily done with my teeth, feels like a more secure seal (no dribbles anymore!), AND it has a cover which I will appreciate hiking in the desert, because eww, dusty bite valve... PERFECT SOLUTION.

Fit our set up fine but dust cover snapped off in the first few days.